As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON APPROACH STRONG SOCK SMELL LEVELING OFF @ 4000 IN COCKPIT AND FWD CABIN. PERSISTING THROUGH ENG SHUTDOWN // PERFORMED #1 & #2 ENG IDLE RUN PER AMM 71-00-00-860-823-A.OPERATIONAL CHECK OF #1 & #2 PACK PER AMM 21-51-00-710-002-A. NO SMELL NOTED. OK FOR SVC.